diff --git a/libc/kernel/uapi/linux/kvm.h b/libc/kernel/uapi/linux/kvm.h
index 4e815cc..1cf7182 100644
--- a/libc/kernel/uapi/linux/kvm.h
+++ b/libc/kernel/uapi/linux/kvm.h
@@ -886,6 +886,10 @@
 #define KVM_CAP_EXIT_ON_EMULATION_FAILURE 204
 #define KVM_CAP_ARM_MTE 205
 #define KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM 206
+#define KVM_CAP_VM_GPA_BITS 207
+#define KVM_CAP_XSAVE2 208
+#define KVM_CAP_SYS_ATTRIBUTES 209
+#define KVM_CAP_PPC_AIL_MODE_3 210
 #ifdef KVM_CAP_IRQ_ROUTING
 struct kvm_irq_routing_irqchip {
   __u32 irqchip;
@@ -911,10 +915,17 @@
   __u32 vcpu;
   __u32 sint;
 };
+struct kvm_irq_routing_xen_evtchn {
+  __u32 port;
+  __u32 vcpu;
+  __u32 priority;
+};
+#define KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL ((__u32) (- 1))
 #define KVM_IRQ_ROUTING_IRQCHIP 1
 #define KVM_IRQ_ROUTING_MSI 2
 #define KVM_IRQ_ROUTING_S390_ADAPTER 3
 #define KVM_IRQ_ROUTING_HV_SINT 4
+#define KVM_IRQ_ROUTING_XEN_EVTCHN 5
 struct kvm_irq_routing_entry {
   __u32 gsi;
   __u32 type;
@@ -925,6 +936,7 @@
     struct kvm_irq_routing_msi msi;
     struct kvm_irq_routing_s390_adapter adapter;
     struct kvm_irq_routing_hv_sint hv_sint;
+    struct kvm_irq_routing_xen_evtchn xen_evtchn;
     __u32 pad[8];
   } u;
 };
@@ -950,6 +962,7 @@
 #define KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL (1 << 1)
 #define KVM_XEN_HVM_CONFIG_SHARED_INFO (1 << 2)
 #define KVM_XEN_HVM_CONFIG_RUNSTATE (1 << 3)
+#define KVM_XEN_HVM_CONFIG_EVTCHN_2LEVEL (1 << 4)
 struct kvm_xen_hvm_config {
   __u32 flags;
   __u32 msr;
@@ -1504,4 +1517,5 @@
   char name[];
 };
 #define KVM_GET_STATS_FD _IO(KVMIO, 0xce)
+#define KVM_GET_XSAVE2 _IOR(KVMIO, 0xcf, struct kvm_xsave)
 #endif